Application Error when trying to access study

[18tr17]

[Howquez]

Hi @18tr17,

Please continue the conversation in your previous question thread rather than open a new one for each error. This helps keep everything organized.

These errors often occur when the CSV file has formatting issues. Unfortunately, the DICE app does not have user-friendly form validation yet, so you only see this non-descriptive error late in the process. Could you share your CSV file so I can take a look at what might be causing the problem?

[18tr17]

Absolutely - see the CSV file attached. Got it re: keeping conversations in the same thread. I resolved the other one on my own and thought I marked it as resolved. Apologies again, and thank you in advance for taking a look.
study_test.csv

[Howquez]

Thanks, I answered in the other thread already. See here, does that help?

[Howquez]

I just checked your csv file:

doc_id,datetime,text,media,alt_text,likes,reposts,replies,username,handle,user_description,user_image,user_followers,commented_post,sponsored,target,condition,sequence
0,01.03.22 06:00,Spending time in nature on this self-care Sunday! #SelfCare ,https://unsplash.com/photos/gray-rocks-on-seashore-during-daytime-KBn4-lyqRgQ,,15,6,2,NatureFanatic,NatureFanatic88,Lover of all things nature. Exploring one national park at a time.,https://unsplash.com/photos/man-sitting-on-cliff-uftqFbfWGFY,4523,0,0,,A,
1,01.03.22 06:00,Spending time in nature this Sunday! ,https://unsplash.com/photos/gray-rocks-on-seashore-during-daytime-KBn4-lyqRgQ,,15,6,2,NatureFanatic,NatureFanatic88,Lover of all things nature. Exploring one national park at a time.,https://unsplash.com/photos/man-sitting-on-cliff-uftqFbfWGFY,4523,0,0,,B,

This should work, but it won't display the images properly. The reason is that the DICE app needs "raw URLs" that point directly to the image files. The URLs you provided (like https://unsplash.com/photos/man-sitting-on-cliff-uftqFbfWGFY) are webpage URLs that show the photo on Unsplash's website. Instead, we need direct image URLs like https://images.unsplash.com/photo-1512438248247-f0f2a5a8b7f0?ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&q=80&w=1364.

The difference is that the first URL takes you to a webpage that contains the image, while the second URL points directly to the image file itself. To get the raw URL on Unsplash, you can:

Right-click on the image and select "Copy image address" (or similar, depending on your browser), OR
Drag the image to your browser's address bar, which will open the direct image URL

Let me know if you need help with this!

[18tr17]

Thank you! This worked.

[Howquez]

I worked on the web-app's interface and added a validation check as well as a preview feature. I hope that this solves most of the problems.

The validation check basically reads the csv file you provided and checks whether it provides all the information required to be rendered to a feed (and thus, to create a session). The validation check also provides some feedback in case some column is missing.

The preview feature renders the csv file to a feed using the same set of rules the actual oTree app is using when creating a session. The feature therefore allows you to see what the feed will look like (based on the csv file you provided) before actually creating a session. This is intended to help you (by getting early feedback) and me (by not creating sessions that look different than expected but initiate processes in the backend, such as creating a database, etc.). The preview only mirrors the user interface, though. It does not mirror the UX (e.g., the ability to like content) that participants have when browsing the session.

I hope this helps.